Hay derrick



July 1o, 1923. 1,461.30?

c. A. CHAPMAN HAY DERRICK l Filed March 30. 1922 Patented July 10, 19723.,`

Unirse 'stares Meise? meer tween CHARLES A. CHAPMAN, OF VGrRINIQ'EI'LILU IOWA. i

Vteneur Dnnnrcx.

Animation mea March o,y1a22. seriai No. 548,110.

vide such a derrick so constructed that can be easily raisedor lowered.

. A further object is to provide such a derrick that can bereadily and easily transported from place to place, and taken through narrow gates and the like.

Still afurther object is to provide such a derrick .so constructed and arranged that hay may be placed on a stack at al great variety of points relative to the distance thereof from the upright member of the derrick,

Iith these and other objectsin view my invention consistsin the. construction, ar-

parts of my device, whereby the objects contemplated are attained, as hereinafter lmore fnlly set forth, pointed out in my claim, and illustrated in the accompanying draw.- in's, in which: s y p s .Figure 1 shows a side elevation of a derrick embodying my invention.

Figure 2 shows a front elevation same. l

Figure 3 shows a side elevation of the der* rick withthe auxiliary brace placed iny position.

Figure 11 is a detailed, sectional view illustrating the method of mountingthel auxiliary brace on the derrick. y Figure 5 is a detailed, sectional view taken on the line 5 5` of Figure 1.

Figure 6 is a detailed, sectional view illustrating the structure at the top ofthe upright member .of the derrick.

Figure 7 is a top or plan view of the center portion of the sill; and

Figure 8 shows a detailed, sectional view of the sill and the lower end of the upright member. Y

In the drawings herewith I have used the reference numeral 10 to indicate generally a sill which may be a 4X8 having its under "of the A. CFHAP- i rangement and combination of the` variousy surface beveled somewhat as atl 11 lsofV that the sill may serve as a runner vin transport? ing the derrick from place'to place.' 4

On the sill 10 midway between'its ends'is i i a plate 12.

A pin 13 is mounted in the sill 10 and lprof jects upwardly through the'plate 12 into th.` Vlower end of an upright mast 14.

It will be,vof course, vunderstood that'ithe y runner and the mast maybe of various slzes.. I preferably use them each thirty-two feetlng.

which, in the ordinary sizes referred to, `is

about twenty-o ne feetabove the sill 10.V '1

The bracket 15 consists of'fa broken ring having, on opposite sides'yprojectin varms 16 on theV broken -side pair of, ears 1 Securedtothe arms k16 are the uppenends of downwardlyA and laterally @extending braces 1S, which are eXtendedto and secured i to theouter ends ofthe sill 10. f

means of a bolt 19 anda nut 20 .for causing y' thebracketl to hold the mast 111 andper-v mit it to rotate freely. l,

\ Between the outer ends of theears 17 is eoj" a sleeve 21 on which is pivotally mounted the upper endoffabraceI 22, which: .extends downwardly in a plane substantially at rightl angles to that which the braces 18 lie.-

. A bolt 23 extended through the ear-SL17A and the sleeve 21 has a nut 241 thereonand y In Figure 6 I have shown inv detail the L structure at the vupper end of the mast. In the upper end of the mast 145 and projecting upwardly therefrom, is a pin 27 which proiectsinto an upright supporting bracketl28,'

having a bifurcated arm 29. l

n will be noted that the bracket es sans i' rotatably mounted on the mast.

Thepulleys 30and 31 are mountedbeltween the arms 29 of the bracket 28'.

.A clampor bracket 32 is mounted on thev mast 14 above the bracket 15. A swingingarm 33 has its inner end pivote'df-to the bracket 32. r f

- 105V Connected to the outer lend o'f the :member y, 05. `i On the mast y1L1VI mount a. bracket 15.

. The ears y17 maybe drawn together by 33 is a flexible member such as the rope 34. The rope 34 is extended over the lower pulley 31 and thence downwardly adjacent to themast 14 to the lower end of the mast where the rope 34 is anchored to the hook 35.

Mounted on the sill 10 adjacent to the mast 14 is a pulley 36.. Supported at the outer end of the swinging arm 33 is a pulley 37.

With my derricl, I use some suitable load carrier such for instance as a hay fork 38. Connected with the load carrier is a flexible device, such as the rope 39% The rope 39 is extended over the pulley 37, thence over the pulley 30, thence downwardly around the pulley 36.

It will be. understood that the rope 39 may be wound on a drum where a power hoist'is used, or that it may be pulled for raising and lowering the forli 38 by means of draft animals.

OnA the brace 22 and the mast 14 are suitable brace holding members which may in each instance consist of a horizon-tal rod 37a mounted in the mast or brace and having an uprightextension 38a (Fig. 4).

I provide an auxiliary brace 39 having holes 41 to receive the extensions 38a, thereby 'connectiong the mast with the brace 39 against rotation and providing a more o r less rigid frame for the derrick for convenience in transporting and setting the derrick.

In raising the derrick the parts are arranged with the mast 14 lying flat with the brace 22 extending on the upper port-ion of the mast 14.

rlhe stake 26 and the brace 22 are used to hold the mast in any adjusted position. After the mast has been raised as high as is convenient, by hand, a team may be hitched onto the army by means of a rope and the mast pulled to upright position. vWhen t-he mast has been raised to the desired position, the brace 22 is anchored.

It will be notedthat, as shown, the mast 14 in Figure l is in a position inclined slightlyforward. This position is slightly exaggerated in the drawing, but ordinarily, in setting the derrick the mast is inclined slightly forward, so to cause the arni 33 to normally swing forward byl gravity. 1When the mast has been properly inclined the brace 22 anchored, and the derrick is ready for use.

hen the derrick is used for stacking hay, a load of hay is driven preferably between the mast 14 and the brace 22. The fork 28 is forced into the load and is then pulled upwardly by a horse or otherwise, by pulling on the rope 39u.

It will be obvious that as the load is raised the anchorage of the mast 14 will cause the arm 33 to swing by gravity toward its position shown in Figure 1.

It will be noted that if it is desired to discharge the load from the fork at the maximum distance from the mast, the load should be discharged before the fork strikes the arm 33. Y

If it is desired' to discharge the load closer to the mast` the draft on the rope 39 may be continued till the arm 43 is raised above the position in which it is normally supported by the rope 34, to position where the fork 38 swings closer to the mast.

On account of the fact that the arm 33 has vertical pivotal movement, as well as hori- Zontal swinging movement with the mast, the derrick can be readily used for discharging the fork load at a great variety of points.

The range of work of which the derrick is capable can also be'varied somewhat by adjusting the bracket 42 vertically on, the mast.

IVhen it is desired' to move the derrick from place -to place theanchored end ofthe brace 22 is released andthe auxiliary brace 39 is connected with the brace 22V andthe mast.

A team or horse may be then hitched to the link or the like 42 Vat one end of the sill 10 which will then serve as a runner for permitting the easy transportation of the derrick from place to place.

When the mast is nearly upright it is easy for a man to hold Vit upright when `the derrick is being moved. from one plate vto another by holding the brace 22m such position as to balance the derrick on the sill.

If it is necessary to pass through the narrow gate, the auxiliary brace 39 is removed, and a man can lift the free end of the brace 22 over the fence without difficulty, and with it can still steady the mast in its travel through the gate.

p My improved derrick is a very simple and inexpensive construction. It is easy to raise and lower, to assemble and to disassemble, and to transport from place to place without dilliculty, and its range of use is wide.

It will, of course, be und'erstoodl that the derrick can be used for other purposes than that of sta-clringhay but that is the primary purpose for which it was devised.

Some changes may be made in the construction and arrangement of the various parts of my derrick without departing from the essential features and purposes of my invention, and it is my intention to cover by my claim any modified form of derrickv or use of mechanical equivalents which may be reasonably included within its scope.

I claim as my invention:

A derrick comprising a sill adapted to serve as a runner, a mast rotatably mounted on said sill, a pair of braces connected ywith the mast to permit rotation thereof and inclined from the mast downwardly and laterally to the sill and connected therewith,

a third brace pivotally mounted on the mast mast. on the Asill as an axis, and a hoisting to permit rotation thereof and inclined mechanism supported on said mast above downwardly and away from the mast sub- Said braces, a detachable brace, and means 10 stantially midway between the rst two for `ixng said brace to said lmast and said 5 sills, whereby said third brace may be swung fllfd bm 6 v Y pivotally in a vertical plane to a variety of DGS MOlVIlGS, IOWSJ, MaICh 4:, 1922 positions and may be used for swinging the CHARLES A. CHAPMAN. 

